Experimental study and thermodynamic assessment of the erbium-hydrogen binary system

The erbium-hydrogen (Er-H) binary system has been investigated experimentally. New solubility limits and extensions of the homogeneity domains have been measured, using several experimental techniques, and high purity materials. A thermodynamic assessment of the system using the Calphad method has been performed. The calculated phase diagram shows a fair agreement with the experimental data. Both experimental and calculated phase diagrams obtained differ significantly from the one available in the literature.